Weird things with Service Engine Soon.
#1
Pro
Thread Starter
Weird things with Service Engine Soon.
My light comes on about 5 to 10 mins after start up on my '95 L1. The engine idles good , even with the ac on and in gear when the light is on. When it goes off, very ruff idle and slightly better if I put in in neutral at a stop. Soon as the light pops up again, back to way smother running engine. Any idears on this. Brand new to this car for sure.
#2
Look on youtube to see how to get codes with a paperclip. Do not forget to remove it when done. Might just be front two o2s.
#3
Pro
Thread Starter
I did that yesterdan and can you believe no codes showed with 2 cycles though them.
#4
Does it bog and fart sometime? Mine did this with no codes the front two o2s was the fix for mine. look for vacumm leaks too. A fuel pressure test will help too.
Last edited by antfarmer2; 08-26-2016 at 06:17 PM.
#5
Pro
Thread Starter
Thanks, will look into that. Seems like it just goes to super rich when the light goes off. Learning something everyday with this car. Love it.
#6
Advanced
Sounds like a bad MAF sensor. When a MAF code appears, the pcm will stop using it and revert to using the other sensors in speed/density mode. That can explain why it runs better with the SES lamp on.
#7
Pro
Thread Starter
Thanks for the heads up Gary, will look into that also.